Update a annotation after a color line has been dragged

[EdDressel]

I need to update the content of an annotation with the Y value of a series after a color line has been moved. The color line is associated with the bottom (X) axis.

I can get the X Value fairly simple:

srsRegUsers.CalcPosValue(crttlLine.Value)

But how do I get the Y value for the color line's location?

Thank you,

Ed Dressel

[EdDressel]

I have attached a demo of what I am needing--I don't know what to use for the Y-value.

[Yeray]

Hello,

You should calculate the Line Interpolation as shown in the example here.